Complete course with practical emphasis. There is 12 hours of information on how to evaluate instruments, refret, nut making, how to change electrical components. In addition, the student is given the main reference measures used in the adjustment process and the most common tools needed for the craft. At the end of the course the student receives a certificate with the workload and the signature of master builder Lucas Caracik. The course is individual and the emphasis is on plucked stringed instruments: electric guitar, acoustic guitar and bass